It sounds as if they found it really early, and this time the type of treatment ought to be able to hunt down cancer cells that can't otherwise be detected. And the stem cell treatment would regenerate the systems in Ethan's body that are affected.

Do you realize how much cancer treatment has advanced in this past decade? Hopefully, this third round will be the charm, and Ethan won't have any more problems with cancer.

After getting a stem-cell transplant as part of his ongoing battle with Hodgkin's lymphoma, Zohn, 38, was by the side of longtime girlfriend as she graduated Wednesday from Columbia University with a masters in Counseling & Clinical Psychology, with an emphasis in substance abuse.

"Through over three years of blood, sweat, tears, heartache, bewilderment, flashes of genius and insight, filming our now Emmy-nominated show Everyday Health, filming Amazing Race, stem cell transplants, two years of Ethan's cancer treatments and sleepless nights, yesterday I graduated!" Morasca, 31, said on Thursday.

A healthy-looking Zohn – who is smiling in a photo of the couple – expresses how "proud" he is of his significant other. "To see her battle through all sorts of challenges and still find her passion for academics is such an inspiration," he tells PEOPLE. "Plus, now I don't have to pay for therapy."

Feeling "stronger every day," Zohn goes on to say, "Despite the huge list of restrictions, everything is going according to plan, especially the growth of my facial hair. I'm excited to start this next phase of my life with Miss Smartypants."